October 27th 2025
The anti–CTLA-4 antibody combination achieved an ORR of 34.8%, with 8 partial responses, in patients with pretreated microsatellite-stable mCRC.
Drs Cohen, Wu, and Ahn discuss HER2 in colorectal cancer, explaining that increased expression indicates possible benefit from HER2 inhibitors; Ahn summarized studies showing modest activity of dual HER2 inhibition compared to single agent trastuzumab.
The Role of Biomarker and Molecular Testing in CRC
Drs Wu, Ciombor, and Cohen discussed upfront molecular testing in patients with colorectal cancer to guide treatment, with Dr Ciombor reviewing HER2 testing methods and Dr Cohen noting liquid biopsy limitations.
Current Treatment Options for CRC
Drs Ahn and Cohen discuss the treatment of colorectal cancer, reviewing the available options and describing factors influencing treatment choice and use of maintenance therapy after initial response.
Overview of Colorectal Cancer (CRC)
Stacy A. Cohen, MD, provides an overview of colorectal cancer, noting increasing incidence in younger patients; Christina S. Wu, MB, BCh, MD, discussed possible reasons for more colorectal cancer in younger people, including genetic predisposition and exposures, though the causes remain unclear.